Danny was a British Royal Air Force bomber gunner who fought during World War II. Stationed with the No. 90 Bomber Squadron, No. 2 Group RAF, Galvin was featured in the expansion pack Call of Duty: United Offensive in the level Bomber.

Danny was born in 1922 in England and enlisted with the Royal Air Force during the outbreak of World War II. He was assigned to the No. 90 Bomber Squadron in 1941. The No. 90 Squadron, recently reorganized from the No. 17 OTU, was given the task of initiating the use of the American B-17 Flying Fortress in Britain's bomber force.

On September 2, 1941, No. 90 Squadron was tasked with raiding a heavy industrial complex on the outskirts of Rotterdam, Holland. Danny was a machine gunner in Left Waist of the B-17 "A for Andy" from this mission—the bomber which Doyle was also assigned as a dorsal gunner. While initially, during the flight over the English Channel, Danny, along with the rest of the B-17's gunners and a squadron of Supermarine Spitfires—callsign "Bulldog"—defended the bombers. However, once over Holland and without fighter escort, "A for Andy" took significant damage, losing engines 1 and 3, its tail gunner Angus, and its navigator. During the fight, Danny was overwhelmed with the intensity of the Luftwaffe's assault. He was killed by an unknown Messerschmitt BF109, launched across the cabin by the fighter's machine gun fire. At numerous times throughout the rest of the flight, Doyle takes the position of Danny at the left waist gun. Presumably, Danny's body was never found, as the plane spontaneously combusted and incinerated his corpse.